Portable knockdown oven.



W. HUENEPELD, PORTABLE KNOCKDOWN OVEN. APPLICATION 3mm) FER/A1910.

Patented July 19,1910.

2 SHEETS-SHEET 1. .1.

F 8 2 my 7 ,m.

6 8 0 JM U v $07 2 M M m W. E. HUENEFELD, PORTABLE KNOGKDOWN OVENAPPLICATION FILED 1 113.4, 1910.

Paiented July 19, 1910.

2 SHEET$SHEET 2.

WALTER E. HUENEFELD, 0F CINCINNATI, OHIO, ASSIGNOE TO THE E. H.HUENEFELZD.

co, or CINCINNATI, OHIO.

IGRTAIBLE anooirncwiv OVEN.

Specification of Letters latent.

Patented July 19, 1910.

Application filed. February 4;, 1910-. Serial No. M2318.

To all whom it may concern: I

Be it known that I, i VALTER E. HUENE- FELD, of Cincinnati, in thecounty of Hamilton and State of Ohio, have invented certain new anduseful Improvements in Portable Knockdbwn Ovens; and I do hereby declarethe following to be a full, clear, and

exact description of the invention,such as will enable others skilled inthe art to which it appertains to make and use the same.

This invention relates to improvements in portable ovens, andparticularly to those of the collapsible type, the object being toprovide an oven which can be readily and quickly assembled by unskilledlabor, and which when assembled, will be as strong and rigid as theovens in which the parts thereof are bolted or riveted together.

A further object is to provide an oven of the collapsible type, inwl'iich the parts thereof are locked together by the lining.

With these objects in view, my invention consists in certain novelfeatures of construction and combination of parts as will be more fullyexplained and pointed out in the claims.

In the accompanying drawings, Figure l, is a view in verticallongitudinal section of an oven embodying my invention. Fig. 2.is a viewin horizontal section. Fig. 3 is a view in transverse vertical section.Figs. 4 and 5 are detail views, and Fig. 6 a view in. perspectiveshowing the manner of assernbling the parts.

1 represents the top sheet of an oven, rectangular in shape and providedat its ends with depending straight flanges 2, and at its fronta'nd rearedges with the shallower depending flanges 3 the latter being bentinwardly and upwardly to engage the outwardly and downwardly bentflanges 4, at

' the upper'edges of the front plate 5 and the back plate 6, as clearlyshown in Fig. 3. The lower ends of the front and back plates 5 and 6 areprovided with the. inwardly, up wardl'y and outwardly turned flanges 7,as clearly shown in Fig. 3, in which the lower inwardly turned edges 8of the depending flanges 9 of the bottom plate 1.0 rest. These flanges 9of the bottom plate-rest against the inner faces of the lower edges ofthe front and back-plates, and these flanges 9 with their inwardlyturned edges 8 act as braces for the front and back plates.

In assembling the oven, the'parts would be placed in position in theorder above named, that is to say, the front and back would be attachedto the top plate, and the bottom plate, which is open at the center, isthen secured to the front and back plates. The front plate 5 and therear or back plate 6, are each provided at its ends, with flanges 11bent to form U-shaped grooves engaged by the inwardly turned ends 12 ofthe flanges 13 of the end plates 14, as shown in Fig. 2, and each endplate 15 is provided. with an inwardly and upwardly bent lower end 15,forming grooves for the reception of also provided at their upper endswith inwardly turned flanges 17, which form grooves for the upwardlyflanged ends 18 of the top lining 19. After the top, front and back,bottom and one end plate have been assenr bled, the back lining 20.which is too large to be introduced through the door opening in thefront 5 without bending, is introduced through the open end, after whichthe latter is closed by sliding its end plate into position.

All the outer plates of the oven are assembled endwise, the flanges ofone plate engaging lapping flanges of the adjacent plates, and after theouter plates have been assembled, the back lining 20, which is providedat its ends and edges with outwardly projecting flanges 521, is placedin position against the back plate, the flanges 21 operating to holdthelining 2O slightly removed from the plate 6 thus forming an air spacebetween them. After the back lining has been placed in position, the toplining 19 15 introduced through the door opening in the front, and movedinto position, with its end flanges 18 engaging the top flanges 17 0fthe end plates 14, after which the end l nings are placed in position.These end 1111- ings rest on the bottom plate 10, aga nst theundersideof the top lining 19, against the front face of back lining, and againstthe rear face of the front plate 5 and operate to hold all these partsin their proper relative positions. All the lining plates are flanged soas to rest in a position more or less removed from the outer plates,whereby air spaces-are formed to prevent undue radiadiameter, while theend and top linings stiffen the oven transversely. The end liningsand-top lin'in also lock the end plates 14- against remova, hence inorder to take the oven apart it is necessary to first remove'the endlinings and top linin This leaves the ends 143 free to be etached. Afterthe end linings have'been assembled,

they are 'loclredin place bythe deflector 2t and the rack or racks23.

The end linings are provided near their per ends with openings 25, andthe end i1 'pifates are provided near their lower ends Jwithopenings 26to provide for ventilation without material loss of heat. 7 7

From the construction and arrangement shown and-described it will beseen that the various members comprisin the oven may be readily andeasily assem led, and when assembled form a rigid substantial structure,in which all the parts are securely held by interlocking seams andflanges, thus avoiding the use of bolts, screws, rivets, and

similar fastening devices. Again the parts are so located andSBCUI'Bd'Wltll relation to eachother, that they mutually brace and se-'cure one-another. No tools are necessaryin assemblin 5 the oven, or intaking it apart, and no ben in or twisting of any part is necessary inorder to properly assemble it.

Having fully described my invention whatI claim as new and desire to'seeure'by Letters-Patent,'is:

tical members provided with supporting portions and removably connectedtOgcther and a removabletop member, of a bottom member disposed withinsaid vertical members andjremovably supported upon said supportingportions of. the vertical members,

and lining sheets disposed between the top and bottom members andresting upon-the.

bottom member and adapted to prevent vertical displacement of thelatter.

2. In an oven the combination with vertical members provided withflanges at their lower edgesand a top member, of a bottom memberdisposed within and supported by a plurality of said vertical members,said bottom-member provided with a plurality of flangesinterlocking-with the fl'angeson adjacent vertical members forpreventing vertical displacement of the bottom and lining sheetsdisposed between the top and bottom members.

3. Inan'oven, the combination with a top member and vertical membersconnected seams therewith, said vertical members having in wardlyprojecting flanges at their lower edges, of a bottom member removablysupported upon said inwardly projecting flanges, and lining membersresting up u said bottom member and preventing vertical displacementthereof.

4;. In an oven, the combination with a top member and. vertical members,the latter having inwardly .and upwardly vturned flanges at their loweredges, of a bottom member provided at its edges with downwardlyprojecting flanges entering the grooves formed by the flanges at thelower edges of the vertical members, and lining sheets resting upon thebottom member and preventing vertical displacement of the latter.

5. A knockdown or collapsible oven comprising a top member, verticalmembers removably connected together and removably connected with thetop member, said vertical members having inturned flanges at their loweredges, a bottom member provided with depending flanges at its edgesremovably mounted in the in-turned flanges at thelower edges of thevertical members, and lining sheets disposed between the top imd bottommembers and resting upon the .atter.

vertical members, and a bottom, two opposltely disposed vertical membershaving inwardly turned flanges at the upper ends, of 1.. In an oven, thecombination with ,ver-f a top lining having flanges interlocking withsaid flanges on the vertical members for preventing endwise displacementof said vertical members and vertical lining members for holding the toplining in place.

7. In an oven the combination with a top, bottom and vertical membersdetachably connected, two oppositely disposed vertical nenibers havinginwardly turned flanges at their-upper ends, of a top lining havingflanges interlocking with said flanges on the vertical members forpreventing endwise movement of the latter, ertical lining members forholding the top lining in place and racks or shelves for holding saidvertical lining members in place. In testimony whereof, I have signedthis specification in the presence of two subscribing witnesses.

W'ALTER E. HUE'NEFELD.

lVitnesses A. N. MITCHELL,

A. W.-Baiorr r.

6. In an oven thecombination with a top,

